I have been getting issue abput clipping
It looks like the faces on the top have inverted normals, i.e. they are inside out. Turn on Viewport Overlays &gt; Face Orientation in the 3D Viewport. The inside/back of faces is shown in red, the front/outside is blue. They should all be blue on your object.
To set the correct orientation, select the affected faces (or maybe even all) and hit Shift + N &gt; Recalculate Normals.